14 of the greatest animal migrations

Caribou

Herds of the migrating animals can grow to impressive numbers — as many as half a million individuals — rivaled only by Africa's great wildebeest migrations. During the winter, caribou travel to forested areas for easier foraging, and they migrate in the summer to superior calving grounds.

Caribou

Herds of the migrating animals can grow to impressive numbers — as many as half a million individuals — rivaled only by Africa's great wildebeest migrations. During the winter, caribou travel to forested areas for easier foraging, and they migrate in the summer to superior calving grounds.